feat: 皮肤站玩家管理（新建/重命名/删除/默认角色/切换正版）

- skin-site-api.ts 补 setDefault/clearDefault/defaultPlayer/switchMojang/adaptLegacyInternal，并恢复 deleteLauncherRelease
- SkinSiteProfileView 增加玩家管理 UI 与状态
- en-US / zh-CN 各补 15 个 profile-view 文案

apps/app-frontend/src/locales/en-US/index.json

@@ -65,24 +65,39 @@
   "app.skin-site.map.open": { "message": "Open in browser" },
   "app.skin-site.map.server": { "message": "Server" },
   "app.skin-site.map.title": { "message": "Server map" },
+  "app.skin-site.profile-view.add-player": { "message": "New player" },
+  "app.skin-site.profile-view.added": { "message": "Player added." },
   "app.skin-site.profile-view.back": { "message": "Back to home" },
+  "app.skin-site.profile-view.cancel": { "message": "Cancel" },
   "app.skin-site.profile-view.cape": { "message": "Cape" },
+  "app.skin-site.profile-view.clear-default": { "message": "Clear default" },
+  "app.skin-site.profile-view.confirm": { "message": "Confirm" },
+  "app.skin-site.profile-view.default-set": { "message": "Default player updated." },
+  "app.skin-site.profile-view.delete": { "message": "Delete" },
+  "app.skin-site.profile-view.deleted": { "message": "Player deleted." },
   "app.skin-site.profile-view.elytra": { "message": "Elytra" },
+  "app.skin-site.profile-view.is-default": { "message": "Default" },
   "app.skin-site.profile-view.loading": { "message": "Loading players…" },
+  "app.skin-site.profile-view.mojang-toggled": { "message": "Mojang status updated." },
   "app.skin-site.profile-view.no-players": { "message": "No players yet." },
+  "app.skin-site.profile-view.player-name-placeholder": { "message": "Player name" },
   "app.skin-site.profile-view.readonly": {
     "message": "Mojang accounts are managed by Mojang; textures cannot be edited here."
   },
   "app.skin-site.profile-view.remove": { "message": "Remove" },
   "app.skin-site.profile-view.removed": { "message": "Texture removed." },
+  "app.skin-site.profile-view.rename": { "message": "Rename" },
+  "app.skin-site.profile-view.renamed": { "message": "Player renamed." },
   "app.skin-site.profile-view.select-hint": {
     "message": "Select a player to preview and edit its textures."
   },
+  "app.skin-site.profile-view.set-default": { "message": "Set as default" },
   "app.skin-site.profile-view.signed-out": {
     "message": "Sign in to manage your players."
   },
   "app.skin-site.profile-view.skin": { "message": "Skin" },
   "app.skin-site.profile-view.title": { "message": "Your players" },
+  "app.skin-site.profile-view.toggle-mojang": { "message": "Toggle Mojang" },
   "app.skin-site.profile-view.upload": { "message": "Upload" },
   "app.skin-site.profile-view.uploaded": { "message": "Texture updated." },
   "app.skin-site.profile.avatar": { "message": "Avatar" },

apps/app-frontend/src/locales/zh-CN/index.json

@@ -61,24 +61,39 @@
   "app.skin-site.map.open": { "message": "在浏览器中打开" },
   "app.skin-site.map.server": { "message": "服务器" },
   "app.skin-site.map.title": { "message": "服务器地图" },
+  "app.skin-site.profile-view.add-player": { "message": "新建角色" },
+  "app.skin-site.profile-view.added": { "message": "角色已添加。" },
   "app.skin-site.profile-view.back": { "message": "返回主页" },
+  "app.skin-site.profile-view.cancel": { "message": "取消" },
   "app.skin-site.profile-view.cape": { "message": "披风" },
+  "app.skin-site.profile-view.clear-default": { "message": "取消默认" },
+  "app.skin-site.profile-view.confirm": { "message": "确认" },
+  "app.skin-site.profile-view.default-set": { "message": "默认角色已更新。" },
+  "app.skin-site.profile-view.delete": { "message": "删除" },
+  "app.skin-site.profile-view.deleted": { "message": "角色已删除。" },
   "app.skin-site.profile-view.elytra": { "message": "鞘翅" },
+  "app.skin-site.profile-view.is-default": { "message": "默认" },
   "app.skin-site.profile-view.loading": { "message": "正在加载角色…" },
+  "app.skin-site.profile-view.mojang-toggled": { "message": "正版状态已更新。" },
   "app.skin-site.profile-view.no-players": { "message": "暂无角色。" },
+  "app.skin-site.profile-view.player-name-placeholder": { "message": "角色名" },
   "app.skin-site.profile-view.readonly": {
     "message": "Mojang 账号由 Mojang 管理，无法在此修改材质。"
   },
   "app.skin-site.profile-view.remove": { "message": "移除" },
   "app.skin-site.profile-view.removed": { "message": "材质已移除。" },
+  "app.skin-site.profile-view.rename": { "message": "重命名" },
+  "app.skin-site.profile-view.renamed": { "message": "角色已重命名。" },
   "app.skin-site.profile-view.select-hint": {
     "message": "选择角色以预览和修改其材质。"
   },
+  "app.skin-site.profile-view.set-default": { "message": "设为默认" },
   "app.skin-site.profile-view.signed-out": {
     "message": "登录后管理你的角色。"
   },
   "app.skin-site.profile-view.skin": { "message": "皮肤" },
   "app.skin-site.profile-view.title": { "message": "我的角色" },
+  "app.skin-site.profile-view.toggle-mojang": { "message": "切换正版" },
   "app.skin-site.profile-view.upload": { "message": "上传" },
   "app.skin-site.profile-view.uploaded": { "message": "材质已更新。" },
   "app.skin-site.profile.avatar": { "message": "头像" },